Interesting point about the 600, I am at the same point now. What year 600 did you ride? The later models through '12 are only 410 lbs (curb weight), only 50 lbs heavier than the 250 (assuming non-ABS on both). Also, I'm really thinking the ideal bike for me will be the upcoming CBR500R. I've been giving this a lot of thought... extremely similar to the 250R but with an inline twin giving 47 (46.9) hp.

That said, MSF instructor said something that always stuck with me: "Riding a smaller bike at 80% is way more fun that riding a larger bike at 20%."

Throttle blip on downshift - yes, ideally you want to match your engine speed before you let out the clutch (for a number of reasons). When you get quick & smooth at it you won't need to cover the brake at the same time.

As far as fuel / octane preference, you'll get all different opinions. Personally, I track my mileage and I've found I definitely get better mpg's using 92 (U.S.) or above. The minimum octane I'll run is 89. The difference works out to about the same, money-wise. I also add Sta-Bil fuel stabilizer / ethanol treatment each time I fill up (religiously during colder weather / less frequent riding periods).

Tire slip on road paint, I don't think new / different tires would help. That sounds like you just gave it a little too much power and/or lean as you rolled over the painted spot. I don't know that I'd want to put my foot down like that, but hey, it kept you up. I bet that one got your heart goin'!

yeah, i think it was mostly a careless lean on my part that almost caused the spill. putting my foot down happened instantaneously and without any conscience thought. my foot bounced right off the asphalt, it didn't even take any rubber off of my boot. and yes, my heart was pounding.

the 600rr i rode was a 2006. it didn't feel "heavy", but with the 250 i feel like i can do almost anything effortlessly.

once i realized that i haven't learned to ride the 250 to its (and mine) maximum capabilities, it was easy to let go of the desire for a more powerful bike.